CN101753193B - Method for dividing multi-user channel estimation and equipment thereof - Google Patents
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Abstract
The invention discloses a method for dividing multi-user channel estimation and equipment thereof. The method comprises the following steps: when users in a cell are accessed to a network, each user reports user self capacity level to the network side; the network side acquires a Midamble code distribution proposal supported by each user according to the capacity level reported by each user; and multi-user channel estimation is divided according to the Midamble code distribution proposal of each user. By using the method and the equipment, user channel estimation division supporting space division multiple access can be realized, and better user division effect can be acquired for subsequent application of space division multiple access.
Description
Technical field
The present invention relates to the communication technology, particularly a kind of method and apparatus of dividing multi-user channel estimating.
Background technology
SDMA (Space Division Multiple Access) is that space division multiple access inserts, its spatial degrees of freedom that can utilize many antennas to provide to a plurality of users that take same asset (time slot, code channel, frequency) is distinguished, thereby realizes a plurality of user's data transmitting-receivings.The purpose of introducing SDMA is in order to improve the average data transfer rate of residential quarter.
The mode that realizes SDMA is relevant with the multi-antenna technology of employing.In intelligent antenna array, use multi-beam figuration technology to carry out multi-user's sky branch, a plurality of main beams are aimed at the user who takies same asset carry out data transmit-receive.Two important application of wave beam forming technology directly improve the signal interference ratio of desired user on the one hand by wave beam forming, so as to improving performance or the availability of frequency spectrum of system; Carry out multiplexing by wave beam forming to limited frequency spectrum resources on the one hand in addition.In the MIMO aerial array, use MU-MIMO (multiuser MIMO) technology, utilize user's space stalling characteristic to disturb elimination in advance at transmitting terminal, use different weight vectors can reduce interference between the user to the user base station array antenna that uses same asset to different user data.
In TDD HSPA, prolong and used intelligent antenna technology, and in follow-up evolution HSPA+, introduced the MIMO technology, this makes the TDD system possess the basis of using SDMA, and simultaneously, the growing jumbo demand of user's two-forty makes that also SDMA has had application prospect.In order in TDD HSPA, to support SDMA, at first need the disturbed condition between the user in the residential quarter is assessed, the very little user of correlation is divided into one group also distributes resources such as identical time-slot code channel for every group of user.
In the prior art, on standard, use SDMA under TDD (Time Division Duplex, the time division duplex) standard and be in conceptual phase at present, also do not have relevant method to propose.From algorithm, some present algorithms all are that the scheduling grouping, the transmitting terminal that concentrate on the multi-user disturb elimination etc. in advance.
The process that many antennas of the prior art are realized SDMA is as follows:
-base station utilize each user pilot tone (TD-SCDMA (and Time Division SynchronousCDMA, the time-division synchronously-code division multiple access inserts) be shifted for the Midamble sign indicating number in the system) do channel estimating, obtain the channel fading of each user and base station;
-base station utilizes each user's channel estimating, comes user in the residential quarter is divided into groups by some user grouping algorithms commonly used, and wherein the user that correlation is very little is divided into one group of SDMA user, and the base station is that every group of user distributes identical resources such as time-slot code channel;
-if descending SDMA, then the base station obtains each user's wave beam forming weight coefficient or the weight coefficient of precoding according to uplink channel estimation.It is its distributed time slot code channel resource that the base station utilizes down control channel to notify the user earlier, the weights that recycling is calculated are each user's downlink data in Traffic Channel, send data for every group of SDMA CU same asset, the down channel estimation is carried out in the Midamble sign indicating number displacement that the terminal utilization distributes, and is that its distributed time slot code channel receives and the decoding downstream data flow in the base station;
-if up SDMA, it is its distributed time slot code channel resource that the base station utilizes down control channel to notify the user earlier, each user sends upstream data in separately resource then, wherein every group of SDMA CU resource sends reverse link traffic channel, and the base station receives and the decoding upstream at corresponding time-slot code channel.
In the said process, channel estimating is based on that the Midamble sign indicating number is shifted to realize.Existing standard be 1 basic Midamble sign indicating number of each cell allocation, and the Midamble sign indicating number is training sequence, is used for the channel estimating, power control, adjustments synchronously, wave beam forming of receiving terminal etc., and in the middle transmission of each conventional time slot, length is 144 chips.The midamble sign indicating number that the different user of the identical time slot of same cells uses is produced after cyclic shift by same basic midamble sign indicating number.The transmitting power of various piece must be consistent in time slot, namely the transmitting power of midamble part with the transmitting power of data division and must be consistent, do not carry out spread spectrum and scrambling.The Midamble sign indicating number distributes the following three kinds of modes that comprise:
The Default method of salary distribution: the i.e. binding that each Midamble sign indicating number is shifted and code channel resource is given tacit consent to.For example when each displacement is 16 chips, a basic Midamble sign indicating number can derive 8 Midamble sign indicating number displacements altogether, so the displacement of each Midamble sign indicating number corresponding the code channel of 2 SF=16, this has stipulated the default relationship under the various displacement situations in standard, the channel code of same code character can not be distributed to different UEs and use, and namely different UEs can not be used identical Midamble sign indicating number;
The Common method of salary distribution: namely the user in the residential quarter takies same Midamble sign indicating number displacement jointly, and different Midamble sign indicating numbers displacement correspondence is being bound different code channel numbers;
The Specific method of salary distribution: namely high-rise the user can take any code channel number for the user who is scheduled distributes a specific Midamble sign indicating number displacement, and the Midamble displacement between the user is different.
At the HSPA+ of 3GPP Release8 (high speed packet access evolution, the high-speed packet access that strengthens) introduced SU-MIMO (Single User-Multiple Input Multiple Output in, single user's multiple-input, multiple-output) technology, improve the downlink data peak rate by descending stream transmission, and correspondingly to MIMO (Multiple Input Multiple Output, multiple-input, multiple-output) terminal of ability has proposed new Midamble code plan scheme, wherein mainly discussed the Default mode, the double fluid that is SU-MIMO distributes identical time-slot code channel resource, and the shared Midamble sign indicating number displacement of double fluid must be different.The user is known the time-slot code channel resource that double fluid is shared according to the schedule information of base station, obtain the corresponding Midamble sign indicating number displacement of these code channels according to corresponding relation, these Midamble sign indicating number displacements are divided into 2 groups, can be according to the sequence number size packets, or parity packet, each data flow takies one group of Midamble sign indicating number displacement.For example when each displacement is 16 chips, a basic Midamble sign indicating number can derive 8 Midamble sign indicating number displacements altogether, need the double fluid for SU-MIMO user respectively to distribute a Midamble sign indicating number displacement so, and these 2 Midamble sign indicating numbers displacements corresponding the code channel of 4 SF=16 shared by double fluid.
The deficiencies in the prior art are: for the user grouping step of SDMA, must obtain each user's channel estimating at the base station end, but the Default scheme for the distribution of the Midamble sign indicating number in the existing standard, if every group of identical time-slot code channel resource of SDMA CU, will use identical Midamble sign indicating number displacement so, do channel estimating if utilize the identical pilot tone of each user (being the displacement of Midamble sign indicating number), will cause mutual serious interference between each user, channel estimation errors is very big, influence channel estimating performance and user grouping performance, finally worsen the SDMA cell throughout.
For the terminal of MIMO ability among the HSPA+, though adopted new Midamble sign indicating number allocative decision, in the standard and realization of existing TDD HSPA, also there is not to support the differentiation subscriber channel estimation approach of SDMA.
Summary of the invention
The invention provides a kind of method and apparatus of dividing multi-user channel estimating, in order to a kind of differentiation subscriber channel estimation approach that can support SDMA to be provided.
A kind of method of dividing multi-user channel estimating is provided in the embodiment of the invention, has comprised the steps:
As the user in the residential quarter during at access network, each user is to the ability rating of network side report of user self;
Network side is known the Midamble sign indicating number allocative decision that each user supports according to the ability rating of each reporting of user;
Channel estimating according to each user's Midamble sign indicating number allocative decision dividing multi-user.
Preferably, the Midamble sign indicating number allocative decision supported according to each user of network side determines to support the user of sign indicating number allocative decision before the 3GPPRelease8 version;
If the user has disposed DPCH, network side is known each user's channel estimating again according to do channel estimating by the displacement of the Midamble sign indicating number on the DPCH in the transmission cycle of DPCH the user under current according to DPCH;
If the user is HSDPA and/or HSUPA business, network side utilizes the user at HS-SICH or does not belong to Midamble sign indicating number that the E-PUCH of the user in the same SDMA grouping sends and is shifted and does channel estimating, distinguishes a plurality of users' channel estimating;
If the user has disposed the half-persistence scheduling resources among the CPC, network side is done channel estimating by the Midamble sign indicating number displacement of the up channel on the described half-persistence scheduling resources for the multi-user.
Preferably, further comprise:
Network side carries out the SDMA grouping according to channel estimation results to all users after distinguishing a plurality of users' uplink channel estimation.
Preferably, further comprise:
If the SDMA grouping is unsuccessful, the mode of then using time-division and sign indicating number to divide is dispatched the multi-user;
If SDMA divides into groups successfully, for down link, it is the resource of its distribution that network side is notified the user by the HS-SCCH form before the 3GPP Release8 version, wherein every group of SDMA user uses same asset, network side sends data by HS-PDSCH to the user then, and SDMA user is adopted multi-beam figuration or MU-MIMO technology; For up link, it is the resource of its distribution that network side is notified the user by the E-AGCH form before the 3GPP Release8 version, wherein every group of SDMA user uses same asset, the CU same asset sends data by E-PUCH in the group, and CU different resource does not on the same group send data by E-PUCH.
Preferably, the Midamble sign indicating number allocative decision supported according to each user of network side determines to support the user of the sign indicating number allocative decision that the SU-MIMO technology of 3GPPRelease8 version is introduced;
When under SDMA CU same asset, using different Midamble sign indicating number displacements, according to the channel estimating of the Midamble sign indicating number allocative decision dividing multi-user of user uplink channel.
Preferably, further comprise:
Network side carries out the SDMA grouping according to channel estimation results to all users after distinguishing a plurality of users' uplink channel estimation.
Preferably, further comprise:
If the SDMA grouping is unsuccessful, the mode of then using time-division and sign indicating number to divide is dispatched the multi-user;
If SDMA divides into groups successfully, when network side is notified the resource that the user distributes, send Midamble sign indicating number displacement information by control channel HS-SCCH or E-AGCH, the user receives data or sends data by E-PUCH by HS-PDSCH on the resource of appointment according to described HS-SCCH or the E-AGCH channel signaling that has carried Midamble sign indicating number displacement information.
Preferably, described by control channel HS-SCCH or E-AGCH transmission Midamble sign indicating number displacement information, be specially:
Send the signaling that is used to indicate Midamble sign indicating number displacement information by control channel HS-SCCH or E-AGCH, and/or, by the signaling territory implicit expression indication Midamble sign indicating number displacement information that is not used on control channel HS-SCCH or the E-AGCH.
Preferably, further comprise:
Independent up idle Midamble sign indicating number displacement information or the new basic Midamble sign indicating number information of sending of each user's cycle or ground aperiodic is used for the channel estimating for the network side dividing multi-user.
The present invention also provides a kind of network equipment for the dividing multi-user channel estimating, comprising:
The ability rating acquisition module is used for obtaining each user to the ability rating of network side report of user self when the user access network in the residential quarter time;
Midamble sign indicating number acquisition module is used for the ability rating according to each reporting of user, knows the Midamble sign indicating number allocative decision that each user supports;
Discriminating module is used for the channel estimating according to each user's Midamble sign indicating number allocative decision dividing multi-user.
Preferably, described discriminating module is further used for the user that the Midamble sign indicating number allocative decision supported according to each user determines to support sign indicating number allocative decision before the 3GPP Release8 version; And
If the user has disposed DPCH, network side is known each user's channel estimating again according to do channel estimating by the displacement of the Midamble sign indicating number on the DPCH in the transmission cycle of DPCH the user under current according to DPCH;
If the user is HSDPA and/or HSUPA business, network side utilizes the user at HS-SICH or does not belong to Midamble sign indicating number that the E-PUCH of the user in the same SDMA grouping sends and is shifted and does channel estimating, distinguishes a plurality of users' channel estimating;
If the user has disposed the half-persistence scheduling resources among the CPC, network side is done channel estimating by the Midamble sign indicating number displacement of the up channel on the described half-persistence scheduling resources for the multi-user.
Preferably, further comprise:
First grouping module is used for after distinguishing a plurality of users' uplink channel estimation, according to channel estimation results all users is carried out the SDMA grouping.
Preferably, described grouping module is further used for if the SDMA grouping is unsuccessful, and the mode of then using time-division and sign indicating number to divide is dispatched the multi-user; If SDMA divides into groups successfully, for down link, it is the resource of its distribution that network side is notified the user by the HS-SCCH form before the 3GPP Release8 version, wherein every group of SDMA user uses same asset, network side sends data by HS-PDSCH to the user then, and SDMA user is adopted multi-beam figuration or MU-MIMO technology; For up link, it is the resource of its distribution that network side is notified the user by the E-AGCH form before the 3GPP Release8 version, wherein every group of SDMA user uses same asset, the CU same asset sends data by E-PUCH in the group, and CU different resource does not on the same group send data by E-PUCH.
Preferably, described discriminating module is further used for the user of the sign indicating number allocative decision that the Midamble sign indicating number allocative decision supported according to each user determines to support that 3GPP Release8 version SU-MIMO technology is introduced; And
When under SDMA CU same asset, using different Midamble sign indicating number displacements, according to the channel estimating of the Midamble sign indicating number allocative decision dividing multi-user of user uplink channel.
Preferably, further comprise:
Second grouping module is used for after distinguishing a plurality of users' uplink channel estimation, according to channel estimation results all users is carried out the SDMA grouping.
Preferably, described grouping module is further used for if the SDMA grouping is unsuccessful, and the mode of then using time-division and sign indicating number to divide is dispatched the multi-user; If SDMA divides into groups successfully, when network side is notified the resource that the user distributes, send Midamble sign indicating number displacement information by control channel HS-SCCH or E-AGCH, the user receives data or sends data by E-PUCH by HS-PDSCH on the resource of appointment according to described HS-SCCH or the E-AGCH channel signaling that has carried Midamble sign indicating number displacement information.
Preferably, described grouping module is further used for sending the signaling that is used to indicate Midamble sign indicating number displacement information by control channel HS-SCCH or E-AGCH, and/or, by the signaling territory implicit expression indication Midamble sign indicating number displacement information that is not used on control channel HS-SCCH or the E-AGCH.
The embodiment of the invention also provides a kind of system for the dividing multi-user channel estimating, comprising:
Subscriber equipment is used for when access network, to the ability rating of network side report of user self;
Network equipment is used for the ability rating according to each reporting of user, knows the Midamble sign indicating number allocative decision that each user supports; Channel estimating according to each user's Midamble sign indicating number allocative decision dividing multi-user.
Preferably, network equipment is further used for after distinguishing a plurality of users' uplink channel estimation, according to channel estimation results all users is carried out the SDMA grouping.
Preferably, subscriber equipment is further used for independent up idle Midamble sign indicating number displacement information or the new basic Midamble sign indicating number information of sending of cycle or ground aperiodic, is used for the channel estimating for the network side dividing multi-user.
Beneficial effect of the present invention is as follows:
In the invention process, as the user in the residential quarter during at access network, each user is to the ability rating of network side report of user self; Network side is known the Midamble sign indicating number allocative decision that each user supports according to the ability rating of each reporting of user; And according to the channel estimating of each user's Midamble sign indicating number allocative decision dividing multi-user.Because the new Midamble sign indicating number allocative decision that whether basis supports the SU-MIMO technology to introduce in the invention process is come the channel estimating of dividing multi-user, at the terminal capability grade that has different Midamble sign indicating number allocative decisions in the TDD HSPA system, the scheme that adopts different differentiation subscriber channels to estimate, overcome in the prior art terminal for MIMO ability among the HSPA+, though adopted new Midamble sign indicating number allocative decision, but in the standard of existing TDD HSPA with in realizing, also there is not to support the deficiency of the differentiation subscriber channel estimation approach of SDMA.Thereby support the SDMA among the HSPA.
Further, in the invention process, network side also carries out the SDMA grouping according to channel estimation results to all users after distinguishing a plurality of users' uplink channel estimation.This differentiation scheme of being about to is used for supporting the SDMA technology.When like this after in TDD HSPA, prolonging with intelligent antenna technology, and in follow-up evolution HSPA+, having introduced the MIMO technology, can when using, SDMA obtain user grouping effect preferably.
Description of drawings
Fig. 1 is the method implementing procedure schematic diagram of dividing multi-user channel estimating in the embodiment of the invention;
Fig. 2 is the network equipment structural representation that is used for the dividing multi-user channel estimating in the embodiment of the invention;
Fig. 3 is the system configuration schematic diagram that is used for the dividing multi-user channel estimating in the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described.
To propose in the embodiment of the invention based on existing different Midamble sign indicating number allocative decision, the dividing multi-user channel estimating is come with the up channel that utilization has different Midamble sign indicating number displacements in the base station, and and then for the SDMA that supports HSPA.
Briefly introduce some up channels in TDD HSPA below earlier:
A) in HSPA, DPCH (Dedicated Physical Channel) is DPCH.LCR (Low Chip Rate for 1.28Mcps, low spreading rate) TDD system, at HSDPA (High-Speed downlink packet access, high speed downlink packet inserts) middle HS-DSCH (HighSpeed Downlink Shared Channel, each UE (UserEquipment when high-speed downlink shared channel) transmitting, subscriber equipment) the HS-DSCH channel that all requires at down link has one to follow DPCH, also to there be one or more HS-SCCH (High-Speed shared control channel, High-Speed Shared Control Channel) to transmit the phase related control information of descending enhancing data simultaneously.Follow the DPCH channel to carry SS (Synchronization Shift, the synch command word) Ming Ling purpose is in order to make UE can keep the up DPCH of following and HS-SICH (High-Speed SharedInformation Channel after following DPCH receiving, high speed uplink is shared information channel) timing, do the closed loop Synchronization Control.TPC (Transmission Power Control, the through-put power control) order of following DPCH to carry is the power control for up channel.The up DPCH of following channel can be used for carrying TPC information, is used for the power of the one or more descending DPCH of control or PDSCH (Physical Downlink Shared Channel, physical down link sharing channel).Cycle and the speed of TPC feedback are to distribute to the function of the ascending resource that carries TPC.In 1.28Mcps TDD system, during the HS-SICH under-activity, must there be enough up emissions to guarantee that Node B (base station) keeps uplink synchronous control fully.If remove up DPCH, Node B just no longer can monitor up synchronously.The code channel resource difference of following DPCH to take of different user, therefore by the Default mode in the Midamble sign indicating number allocative decision as can be known, these users to follow the employed Midamble sign indicating number displacement of channel also be different.
B) the upload control physical channel HS-SICH in HSDPA is responsible for carrying HARQ (the Hybrid Automatic Repeat Request to data on the HS-DSCH channel, mixed automatic repeat request) confirmation (ACK/NACK) and CQI (Channel Quality Indicator, the channel quality indication) information, carry TPC and SS information in addition, but there is not TFCI (Transport Format CombinationIndicator, combinations of transport formats indication).The code channel of 1 up SF16 of a HS-SICH channel occupancy, and all take time slot format#5.The physical channel of HS-SICH for sharing makes a plurality of users use identical spreading code simultaneously, distinguishes by orthogonal sequence between the user.In existing standard, control channel HS-SCCH and HS-SICH do not adopt the SDMA technology, that is to say that a plurality of users can not take same HS-SICH simultaneously, but the mode that adopts time-division and sign indicating number to divide, the employed Midamble sign indicating number displacement of these users' HS-SICH also is different so.
C) in HSUPA (High Speed Uplink Packet Access, high speed uplink packet inserts), the user is by reverse link traffic channel E-PUCH (E-DCH Physical Uplink Channel, E-DCH physical uplink channel; E-DCH:Enhanced Dedicated Transport Channel strengthens the shape dedicated transmission channel) to base station transmission upstream data.When in HSUPA, adopting SDMA, just may be assigned with identical time-slot code channel resource between a plurality of users, this moment is for the Midamble sign indicating number allocative decision of Default so, the Midamble sign indicating number displacement that CU in each SDMA user organizes is identical, if channel estimating is done to every group user in the base station, each user's phase mutual interference will appear, the situation that channel estimation errors is bigger.If the base station is that the user who is assigned with the different time-gap code channel resource is done channel estimating, then can obtain the good channel estimated result.
D) in the follow-up evolution HSPA+ of HSPA system, introduced key technology a: CPC (Continuous Packet Connectivity, continuing grouping connects), main purpose is to improve the grouping user capacity under the condition of the throughput performance that does not reduce the residential quarter, reduce the service time that the UE power consumption prolongs the UE battery as far as possible, and optimize and support VoIP (Voice over IP, IP-based voice transfer) class business increases voip user's up-link capacity etc.In order to optimize the support to the higher business of the such small data packets of VoIP, delay requirement, reduce the expense of control channel.For up, uplink scheme at the VoIP business, NodeB is by control channel E-AGCH (E-DCH Absolute Grant Channel, the E-DCH absolute grant channel) for UE distributes semi-continuous (or semi-static) physical resource, UE carries out the transmission of VoIP business in the resource authorization scope; For descending, the base station is carried out the transmission of downlink data by HS-SCCH notice UE to it in which resource, also need simultaneously to the UE indication at which bar HS-SICH feeding back after the data decode that receives on the semi-continuous resource.Wherein, network side is that UE has distributed maximum four HS-SICH by high-level signaling in advance, and numbers respectively, and feed back at corresponding HS-SICH by the notice of the indication on the HS-SICH UE base station.
As seen, above-mentioned several channels all can be used as the base station terminal are done channel estimating, thereby support the user grouping of SDMA.But the above-mentioned up channel as channel estimating sends all has certain hour at interval, if the interval is excessive, will have influence on the accuracy of channel estimating.So also can consider to make the user in certain cycle, to send idle independent Midamble sign indicating number displacement, or new basic Midamble sign indicating number, thereby reach the purpose that channel estimating is in time done in the base station.
Below at TDD HSPA system, to how to realize the dividing multi-user channel estimating and realize that by the dividing multi-user channel estimating the concrete enforcement of SDMA describes.
Fig. 1 is the method implementing procedure schematic diagram of dividing multi-user channel estimating, as shown in the figure, can comprise the steps:
Enforcement to each step describes below.
In the step 101,102, when the user access network in the residential quarter, each user can pass through mode such as RRC (RadioResource Control, Radio Resource control) signaling and report the ability rating of self to network side.Network side is known the Midamble sign indicating number allocative decision that each user supports according to the ability rating of reporting of user.Among the embodiment, for the terminal of not supporting the MIMO technology, i.e. 3GPP Release7 and the terminal of version in the past thereof, its used Midamble sign indicating number allocative decision is called the sign indicating number allocative decision before the R8; For the terminal of supporting the MIMO technology, i.e. the terminal of 3GPP Release8 version, its used Midamble sign indicating number allocative decision is called R8 sign indicating number allocative decision.
To in the step 103, the channel estimating of dividing multi-user describes after knowing Midamble sign indicating number allocative decision below, is divided into two kinds during explanation, that is, support 3GPP Release8 version and support 3GP,PRe,lea,se8 two kinds of situations of version before.
One, supports 3GPP Release8 version before.
At first the Midamble sign indicating number allocative decision supported according to each user of network side determines to support the user of sign indicating number allocative decision before the 3GPPRelease8 version, the base station need be adopted the scheme of each subscriber channel estimation of different differentiations according to different scenes then, can handle as follows:
1, if the user has disposed DPCH, network side is known each user's channel estimating again according to do channel estimating by the displacement of the Midamble sign indicating number on the DPCH in the transmission cycle of DPCH the user under current according to DPCH.
In the enforcement, if the user has disposed the up DPCH of following, because the mode that each CU DPCH adopts time-division or sign indicating number to divide, and each to follow the Midamble sign indicating number displacement of channel be different, therefore the base station is according to do channel estimating by the displacement of the Midamble sign indicating number on the DPCH in the up transmission cycle of following channel, according to following DPCH current affiliated user, know each user's channel estimating again.
2, if the user is HSDPA and/or HSUPA business, network side utilizes the user at HS-SICH or does not belong to Midamble sign indicating number that the E-PUCH of the user in the same SDMA grouping sends and is shifted and does channel estimating, distinguishes a plurality of users' channel estimating.
In the enforcement, if common HSDPA, a plurality of users can not take same HS-SICH, perhaps if common HSUPA business, no matter be that scheduled transmission also is non-scheduled transmission, all to guarantee the multi-user when E-PUCH sends data, can not take identical code channel resource (the same group of SDMA user who therefore takies same asset can not use E-PUCH, and not on the same group the user can), this just can be shifted so that the multi-user takies different Midamble sign indicating numbers.The base station utilizes the user to do channel estimating in the Midamble sign indicating number displacement that HS-SICH or E-PUCH send, and just can distinguish a plurality of users' channel estimating.
3, if the user has disposed the half-persistence scheduling resources among the CPC, network side is done channel estimating by the Midamble sign indicating number displacement of the up channel on the described half-persistence scheduling resources for the multi-user.
In the enforcement, if the user has disposed the half-persistence scheduling resources among the CPC, then the user can send control signaling at control channel HS-SICH in respective resources, perhaps send upstream data at Traffic Channel E-PUCH, a plurality of users do not take identical physical resource, therefore used Midamble sign indicating number displacement also is different, and the base station is done channel estimating by the Midamble sign indicating number displacement of the up channel on these half-persistence scheduling resources for the multi-user.
Further, SDMA user's grouping just can be carried out in the base station after the user who inserts the residential quarter is done uplink channel estimation, carry out multi-subscriber dispatching then, at this moment also needs to adopt different processing procedures according to the difference of user capability grade.That is, the base station utilizes these channel estimation results and certain algorithm that all users are carried out the SDMA grouping after distinguishing a plurality of users' uplink channel estimation.
If the SDMA grouping is unsuccessful, the mode of then using time-division and sign indicating number to divide is dispatched the multi-user; That is, when grouping is unsuccessful, then do not use the SDMA technology, the mode of only using time-division and sign indicating number to divide is dispatched the multi-user.
If SDMA divides into groups successfully, for down link, it is the resource of its distribution that network side is notified the user by the HS-SCCH form before the 3GPP Release8 version, wherein every group of SDMA user uses same asset, network side sends data by HS-PDSCH to the user then, and SDMA user is adopted multi-beam figuration or MU-MIMO technology; For up link, it is the resource of its distribution that network side is notified the user by the E-AGCH form before the 3GPP Release8 version, wherein every group of SDMA user uses same asset, the CU same asset sends data by E-PUCH in the group, and CU different resource does not on the same group send data by E-PUCH.
Two, support the version of 3GPP Release8.
The user of the Midamble sign indicating number allocative decision supported according to each user of the network side new sign indicating number allocative decision determining to support that 3GPPRelease8 version SU-MIMO technology is introduced at first, wherein: " new " word, be the Midamble sign indicating number allocative decision of saying that SU-MIMO introduces in Release8, but be not limited to only be used for the SU-MIMO terminal.When under SDMA CU same asset, using different Midamble sign indicating number displacements, according to the channel estimating of the Midamble sign indicating number allocative decision dividing multi-user of user uplink channel, can handle as follows:
Support the user of the Midamble sign indicating number allocative decision that 3GPP Release8 version is new for this class, set and allow SDMA user taking the different Midamble sign indicating number displacement of use under the prerequisite of same asset, that is to say, with distributing between corresponding all the Midamble sign indicating number displacement users in group of the code channel resource that every group of SDMA user shared, as mean allocation.For example, there are 2 users to be grouped success, 2 users in this group share the code channel of 8 SF16, and when having 8 Midamble sign indicating number displacements in the residential quarter, these code channel resources are corresponding with 4 Midamble sign indicating number displacements as can be known according to corresponding relation, these 4 Midamble sign indicating number displacements can be divided to these 2 users equally 2 Midamble sign indicating number displacements of each CU so.
Uplink channel estimation is done to each user in the base station.Because for same group SDMA user, even multi-user's reverse link traffic channel has taken identical code channel resource, but according to the new sign indicating number allocative decision of R8 as can be known, what these users used is different Midamble sign indicating number displacements; For on the same group user not, because the resource difference that takies, so the displacement of Midamble sign indicating number is also different.Therefore the base station always can distinguish multi-user's channel estimating.
Further, network side carries out the SDMA grouping according to channel estimation results to all users after distinguishing a plurality of users' uplink channel estimation.That is, the base station just can utilize these channel estimation results and certain algorithm that all users are divided into groups after distinguishing a plurality of users' uplink channel estimation.
If the SDMA grouping is unsuccessful, the mode of then using time-division and sign indicating number to divide is dispatched the multi-user; That is, when grouping is unsuccessful, then do not use the SDMA technology, the mode of only using time-division and sign indicating number to divide is dispatched the multi-user.
If SDMA divides into groups successfully, when network side is notified the resource that the user distributes, send Midamble sign indicating number displacement information by control channel HS-SCCH or E-AGCH, the user receives data or sends data by E-PUCH by HS-PDSCH on the resource of appointment according to described HS-SCCH or the E-AGCH channel signaling that has carried Midamble sign indicating number displacement information.
In the enforcement, if divide into groups successfully, for down link, when the resource that base station notice terminal is distributed, need information of many carryings-Midamble sign indicating number displacement information on the control channel HS-SCCH of use or the E-AGCH.This be because, SDMA user for same group, the resource allocation information that the base station sends at control channel is identical, but because the Midamble sign indicating number displacement of the code channel resource correspondences that these need be shared divide equally between the user in group, thus want also that user in the group of notifications takies separately be after dividing equally where part Midamble sign indicating number is shifted.
Specifically the scheme by control channel HS-SCCH or E-AGCH transmission Midamble sign indicating number displacement information can be: send the signaling that is used to indicate Midamble sign indicating number displacement information by control channel HS-SCCH or E-AGCH, and/or, by the signaling territory indication Midamble sign indicating number displacement information that is not used on control channel HS-SCCH or the E-AGCH.
Concrete, can increase explicit signaling at control channel, namely newly-increased Midamble sign indicating number displacement information bit decides number of bits according to user's number in the group after the SDMA user grouping, mostly be most N user such as every group, then need newly-increased signaling to be the maximum integer greater than log2 (N); Perhaps carry out implicit expression notice at control channel, the state of going up which signaling territory such as HS-SCCH or E-AGCH is not used, and then can bring the Midamble sign indicating number displacement information between indication SDMA user.The user just can receive the data by the HS-PDSCH transmission in the resource of appointment, perhaps by E-PUCH transmission data after receiving the information that has contained the displacement of Midamble sign indicating number that the base station sends by HS-SCCH or E-AGCH channel.
Further, can also make independent up idle Midamble sign indicating number displacement information or the new basic Midamble sign indicating number information of sending in each user's cycle or aperiodic ground, be used for the channel estimating for the network side dividing multi-user.For above-mentioned user, can also adopt to make multi-user's cycle or aperiodic ground send the method for up idle Midamble sign indicating number displacement or new basic Midamble sign indicating number separately, come the channel estimating at the base station dividing multi-user.If it should be noted that the independent Midamble sign indicating number that sends between the user is different.
Based on same inventive concept, the network equipment that is used for the dividing multi-user channel estimating, and system also are provided in the embodiment of the invention, because similar to the method principle of dividing multi-user channel estimating, so the part execution mode can the reference area separating method, repeats part and repeats no more.
Fig. 2 as shown in the figure, can comprise in the network equipment for being used for the network equipment structural representation of dividing multi-user channel estimating:
Ability rating acquisition module 201 is used for obtaining each user to the ability rating of network side report of user self when the user access network in the residential quarter time;
Midamble sign indicating number acquisition module 202 is used for the ability rating according to each reporting of user, knows the Midamble sign indicating number allocative decision that each user supports;
In concrete the enforcement, whether support 3GPP Release8 version to distinguish according to subscriber equipment equally.
One, supports 3GPP Release8 version before.
The Midamble sign indicating number allocative decision that discriminating module can be further used for supporting according to each user determines to support the 3GPP Release8 version user of sign indicating number allocative decision before; And
If the user has disposed DPCH, network side is known each user's channel estimating again according to do channel estimating by the displacement of the Midamble sign indicating number on the DPCH in the transmission cycle of DPCH the user under current according to DPCH;
If the user is HSDPA and/or HSUPA business, network side utilizes the user at HS-SICH or does not belong to Midamble sign indicating number that the E-PUCH of the user in the same SDMA grouping sends and is shifted and does channel estimating, distinguishes a plurality of users' channel estimating;
If the user has disposed the half-persistence scheduling resources among the CPC, network side is done channel estimating by the Midamble sign indicating number displacement of the up channel on the described half-persistence scheduling resources for the multi-user.
Further, network equipment can also comprise:
Described grouping module can also be further used for if the SDMA grouping is unsuccessful, and the mode of then using time-division and sign indicating number to divide is dispatched the multi-user; If SDMA divides into groups successfully, for down link, it is the resource of its distribution that network side is notified the user by the HS-SCCH form before the 3GPPRelease8 version, wherein every group of SDMA user uses same asset, network side sends data by HS-PDSCH to the user then, and SDMA user is adopted multi-beam figuration or MU-MIMO technology; For up link, it is the resource of its distribution that network side is notified the user by the E-AGCH form before the 3GPPRelease8 version, wherein every group of SDMA user uses same asset, the CU same asset sends data by E-PUCH in the group, and CU different resource does not on the same group send data by E-PUCH.
Two, support the version of 3GPP Release8.
The Midamble sign indicating number allocative decision that discriminating module can be further used for supporting according to each user is determined the user of the new sign indicating number allocative decision that support 3GPP Release8 version SU-MIMO technology is introduced; And
When under SDMA CU same asset, using different Midamble sign indicating number displacements, according to the channel estimating of the Midamble sign indicating number allocative decision dividing multi-user of user uplink channel.
Network equipment may further include:
Grouping module can also be further used for if the SDMA grouping is unsuccessful, and the mode of then using time-division and sign indicating number to divide is dispatched the multi-user; If SDMA divides into groups successfully, when network side is notified the resource that the user distributes, send Midamble sign indicating number displacement information by control channel HS-SCCH or E-AGCH, the user receives data or sends data by E-PUCH by HS-PDSCH on the resource of appointment according to described HS-SCCH or the E-AGCH channel signaling that has carried Midamble sign indicating number displacement information.
Grouping module further can be used for sending the signaling that is used to indicate Midamble sign indicating number displacement information by control channel HS-SCCH or E-AGCH, and/or, by the signaling territory indication Midamble sign indicating number displacement information that is not used on control channel HS-SCCH or the E-AGCH.
Fig. 3 as shown in the figure, comprises subscriber equipment 301, network equipment 302 for being used for the system configuration schematic diagram of dividing multi-user channel estimating in the system, wherein:
Network equipment further can also be used for according to channel estimation results all users being carried out the SDMA grouping after distinguishing a plurality of users' uplink channel estimation.
Subscriber equipment can be further used for independent up idle Midamble sign indicating number displacement information or the new basic Midamble sign indicating number information of sending of cycle or ground aperiodic, is used for the channel estimating for the network side dividing multi-user.
By above-described embodiment as can be known, in the embodiment of the invention, for the terminal of supporting 3GPP Release8 version Midamble sign indicating number allocative decision before, utilize the up E-PUCH in the different SDMA groupings or the half-persistence scheduling resources among the CPC followed among HS-SICH among channel or the common HSDPA or the common HSUPA, use different Midamble sign indicating numbers on these channels to be shifted the channel estimating of dividing multi-user;
For the terminal of supporting the new Midamble sign indicating number allocative decision that the SU-MIMO technology is introduced in the 3GPP Release8 version, utilize SDMA user to share code channel resource but use the Midamble sign indicating number allocative decision of different Midamble sign indicating numbers displacements, come the channel estimating of dividing multi-user.Further, network side is the newly-increased indication to different Midamble sign indicating numbers displacement information of SDMA user at control channel, comprises the explicit indication of newly-increased signaling bit and utilizes on the existing channel signaling not come the implicit expression indication with state.
Network side can also send different independent Midamble sign indicating numbers according to a plurality of users and distinguish channel estimating between the user.
As seen, in the embodiment of the invention at the terminal capability grade that has different Midamble sign indicating number allocative decisions in the TDD HSPA system, the scheme that adopts different differentiation subscriber channels to estimate, overcome in the prior art terminal for MIMO ability among the HSPA+, though adopted new Midamble sign indicating number allocative decision, but in the standard of existing TDD HSPA with in realizing, also there is not to support the deficiency of the differentiation subscriber channel estimation approach of SDMA.Further, the present invention also should the differentiation scheme be used for supporting the SDMA technology.Like this when in TDD HSPA, prolonging when using intelligent antenna technology, and when in follow-up evolution HSPA+, having introduced the MIMO technology, can when using, SDMA obtain user grouping effect preferably.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware embodiment, complete software embodiment or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form of the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is that reference is described according to flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, make and carry out the sequence of operations step producing computer implemented processing at computer or other programmable devices, thereby be provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame in the instruction that computer or other programmable devices are carried out.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic creative concept of cicada, then can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Claims (13)
1. the method for a dividing multi-user channel estimating is characterized in that, comprises the steps:
As the user in the residential quarter during at access network, each user is to the ability rating of network side report of user self;
Network side is known the Midamble sign indicating number allocative decision that each user supports according to the ability rating of each reporting of user;
According to the channel estimating of each user's Midamble sign indicating number allocative decision dividing multi-user, described each user's Midamble sign indicating number allocative decision is sign indicating number allocative decision or be 3GPP Release8 version code allocative decision before the 3GPP Release8 version;
Wherein, the Midamble sign indicating number allocative decision supported according to each user of network side determines to support the user of sign indicating number allocative decision before the 3GPPRelease8 version; If the user has disposed DPCH, network side is known its current affiliated user's channel estimating again according to do channel estimating by the displacement of the Midamble sign indicating number on the DPCH in the transmission cycle of DPCH the user under current according to DPCH; If user's transmitting high speed down grouping access service, network side utilize the user to do channel estimating in the Midamble sign indicating number displacement that the shared information channel of high speed uplink sends, distinguish a plurality of users' channel estimating; If the user has disposed the half-persistence scheduling resources in the lasting grouping connection, network side is done channel estimating by the Midamble sign indicating number displacement of the up channel on the described half-persistence scheduling resources for the multi-user;
Wherein, the user of the Midamble sign indicating number allocative decision supported according to each user of the network side sign indicating number allocative decision determining to support that 3GPPRelease8 version list user Multiple Input Multiple Output is introduced; Insert when using different Midamble sign indicating number displacements under the CU same asset at space division multiple access, according to the channel estimating of the Midamble sign indicating number allocative decision dividing multi-user of user uplink channel.
2. the method for claim 1 is characterized in that, described each user's Midamble sign indicating number allocative decision is before the 3GPP Release8 version during sign indicating number allocative decision, further comprises:
Network side carries out space division multiple access according to channel estimation results to all users and inserts grouping after distinguishing a plurality of users' uplink channel estimation.
3. method as claimed in claim 2 is characterized in that, further comprises:
If it is unsuccessful that space division multiple access inserts grouping, the mode of then using time-division and sign indicating number to divide is dispatched the multi-user;
If inserting, space division multiple access divides into groups successfully, for down link, it is the resource of its distribution that network side is notified the user by the High-Speed Shared Control Channel form before the 3GPP Release8 version, wherein every group of space division multiple access inserts the user and uses same asset, network side sends data by High-Speed Physical Downlink Shared Channel to the user then, and space division multiple access is inserted the user adopt multi-beam figuration or multi-user multiple input multiple output technology; For up link, it is the resource of its distribution that network side is notified the user by the enhancing shape dedicated transmission channel absolute grant channel form before the 3GPP Release8 version, wherein every group of space division multiple access inserts the user and uses same asset, the CU same asset sends data by strengthening shape dedicated transmission channel physical uplink channel in the group, and CU different resource does not on the same group send data by strengthening shape dedicated transmission channel physical uplink channel.
4. the method for claim 1 is characterized in that, when described each user's Midamble sign indicating number allocative decision is 3GPP Release8 version code allocative decision, further comprises:
Network side carries out space division multiple access according to channel estimation results to all users and inserts grouping after distinguishing a plurality of users' uplink channel estimation.
5. method as claimed in claim 4 is characterized in that, further comprises:
If it is unsuccessful that space division multiple access inserts grouping, the mode of then using time-division and sign indicating number to divide is dispatched the multi-user;
If inserting, space division multiple access divides into groups successfully, when network side is notified the resource that the user distributes, send Midamble sign indicating number displacement information by control channel High-Speed Shared Control Channel or enhancing shape dedicated transmission channel absolute grant channel, the user sends data by High-Speed Physical Downlink Shared Channel reception data or by strengthening shape dedicated transmission channel physical uplink channel according to described High-Speed Shared Control Channel or the enhancing shape dedicated transmission channel absolute grant channel channel signaling that has carried Midamble sign indicating number displacement information on the resource of appointment.
6. method as claimed in claim 5 is characterized in that, and is described by control channel High-Speed Shared Control Channel or enhancing shape dedicated transmission channel absolute grant channel transmission Midamble sign indicating number displacement information, is specially:
Send the signaling that is used to indicate Midamble sign indicating number displacement information by control channel High-Speed Shared Control Channel or enhancing shape dedicated transmission channel absolute grant channel, and/or, by the signaling territory indication Midamble sign indicating number displacement information that is not used on control channel High-Speed Shared Control Channel or the enhancing shape dedicated transmission channel absolute grant channel.
7. as the arbitrary described method of claim 1 to 6, it is characterized in that, further comprise:
Independent up idle Midamble sign indicating number displacement information or the new basic Midamble sign indicating number information of sending of each user's cycle or ground aperiodic is used for the channel estimating for the network side dividing multi-user.
8. a network equipment that is used for the dividing multi-user channel estimating is characterized in that, comprising:
The ability rating acquisition module is used for obtaining each user to the ability rating of network side report of user self when the user access network in the residential quarter time;
Midamble sign indicating number acquisition module is used for the ability rating according to each reporting of user, knows the Midamble sign indicating number allocative decision that each user supports;
Discriminating module, be used for the channel estimating according to each user's Midamble sign indicating number allocative decision dividing multi-user, described each user's Midamble sign indicating number allocative decision is sign indicating number allocative decision or be 3GPP Release8 version code allocative decision before the 3GPP Release8 version;
Wherein, described discriminating module is further used for the user that the Midamble sign indicating number allocative decision supported according to each user determines to support sign indicating number allocative decision before the 3GPP Release8 version; And if the user has disposed DPCH, network side is known its current affiliated user's channel estimating again according to do channel estimating by the displacement of the Midamble sign indicating number on the DPCH in the transmission cycle of DPCH the user under current according to DPCH; If user's transmitting high speed down grouping access service, network side utilize the user to do channel estimating in the Midamble sign indicating number displacement that the shared information channel of high speed uplink sends, distinguish a plurality of users' channel estimating; If the user has disposed the half-persistence scheduling resources in the lasting grouping connection, network side is done channel estimating by the Midamble sign indicating number displacement of the up channel on the described half-persistence scheduling resources for the multi-user;
Wherein, described discriminating module is further used for the user of the sign indicating number allocative decision that the Midamble sign indicating number allocative decision supported according to each user determines to support that 3GPP Release8 version list user Multiple Input Multiple Output is introduced; And insert when using different Midamble sign indicating number displacements under the CU same asset at space division multiple access, according to the channel estimating of the Midamble sign indicating number allocative decision dividing multi-user of user uplink channel.
9. network equipment as claimed in claim 8 is characterized in that, described each user's Midamble sign indicating number allocative decision is before the 3GPP Release8 version during sign indicating number allocative decision, further comprises:
First grouping module is used for after distinguishing a plurality of users' uplink channel estimation, according to channel estimation results all users is carried out space division multiple access and inserts grouping.
10. network equipment as claimed in claim 9 is characterized in that, described grouping module is further used for if space division multiple access inserts grouping unsuccessful, and the mode of then using time-division and sign indicating number to divide is dispatched the multi-user; If inserting, space division multiple access divides into groups successfully, for down link, it is the resource of its distribution that network side is notified the user by the High-Speed Shared Control Channel form before the 3GPP Release8 version, wherein every group of space division multiple access inserts the user and uses same asset, network side sends data by High-Speed Physical Downlink Shared Channel to the user then, and space division multiple access is inserted the user adopt multi-beam figuration or multi-user multiple input multiple output technology; For up link, it is the resource of its distribution that network side is notified the user by the enhancing shape dedicated transmission channel absolute grant channel form before the 3GPP Release8 version, wherein every group of space division multiple access inserts the user and uses same asset, the CU same asset sends data by strengthening shape dedicated transmission channel physical uplink channel in the group, and CU different resource does not on the same group send data by strengthening shape dedicated transmission channel physical uplink channel.
11. network equipment as claimed in claim 8 is characterized in that, when described each user's Midamble sign indicating number allocative decision is 3GPP Release8 version code allocative decision, further comprises:
Second grouping module is used for after distinguishing a plurality of users' uplink channel estimation, according to channel estimation results all users is carried out space division multiple access and inserts grouping.
12. network equipment as claimed in claim 11 is characterized in that, described grouping module is further used for if space division multiple access inserts grouping unsuccessful, and the mode of then using time-division and sign indicating number to divide is dispatched the multi-user; If inserting, space division multiple access divides into groups successfully, when network side is notified the resource that the user distributes, send Midamble sign indicating number displacement information by control channel High-Speed Shared Control Channel or enhancing shape dedicated transmission channel absolute grant channel, the user sends data by High-Speed Physical Downlink Shared Channel reception data or by strengthening shape dedicated transmission channel physical uplink channel according to described High-Speed Shared Control Channel or the enhancing shape dedicated transmission channel absolute grant channel channel signaling that has carried Midamble sign indicating number displacement information on the resource of appointment.
13. network equipment as claimed in claim 12, it is characterized in that, described grouping module is further used for by the control channel High-Speed Shared Control Channel or strengthens shape dedicated transmission channel absolute grant channel sending the signaling that is used to indicate Midamble sign indicating number displacement information, and/or, by the signaling territory indication Midamble sign indicating number displacement information that is not used on control channel High-Speed Shared Control Channel or the enhancing shape dedicated transmission channel absolute grant channel.
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| US10608720B2 (en) * | 2016-11-20 | 2020-03-31 | Qualcomm Incorporated | Indicating support for communication using mid-ambles |
| CN109302702A (en) * | 2017-07-24 | 2019-02-01 | 中兴通讯股份有限公司 | Radio resource management method, network side equipment and computer readable storage medium |
| JP7154078B2 (en) * | 2017-10-20 | 2022-10-17 | パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカ | Initiator device, communication method, and integrated circuit |
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Address after: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
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Effective date of registration: 20210603 Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
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